聚氨酯固-固相变储能材料的研究(英文)

Study on Polyurethane Solid-Solid Phase Change Materials

利用聚乙二醇(PEG)为主体,加入无机纳米材料蛋白石(Opal),制备出的新型的有机-无机体系的聚氨酯/Opal固-固相变储能材料,利用了IR、1HNMR、DSC、POM、TG等测试手段,对其结构和性能进行了表征分析。结果表明,该聚氨酯型相变材料具有较高的相变焓值、适宜的相变温度、热性能稳定和相变过程中不产生液体等特点。同时,加入天然纳米无机材料蛋白石后,不仅提高了材料的相变焓值,而且提高了其结晶性能,促使其结晶速率加快,结晶呈现出很规整的球晶状态。

Polyethylene glycol （PEG） was used as the host material and the inorganic nano-material opal was introduced as nucleating agent to synthesize a novel organic-inorganic polyurethane/opal solid-solid phase change energy storage material. The composition, phase transition properties and the thermal properties of the materials were tested by infrared spectroscopy （ IR）, proton nuclear magnetic resonance spectroscopy （1HNMR）, differential scanning calorimetry （DSC）, polarized microphotograph （POM）, and thermogravimetric （TG）, respectively. The results show that a novel polyurethane/opal solid-solid phase change material. （PUPCM） was synthesized which had great transition enthalpy, good thermal stabilities, controllable transition temperature and no liqtiids leakage during transition. Meanwhile, due to the presence of the opal, not only the transition enthalpy increased but the crystallization rate also increased so that the crystallization properties were improved and the spherulites were regular and integrated.